Bricked Pogo E02 not loading from USB (no replies)

Hi,

I have bricked my Pogo E02. When plugged in the light flashes green and eventually it flashes yellow. I can only get into it via a serial connection. Here is what I get on boot:

U-Boot 2016.05-tld-1 (Jun 12 2016 - 13:23:43 -0700)
Pogo E02

SoC:   Kirkwood 88F6281_A0
DRAM:  256 MiB
WARNING: Caches not enabled
NAND:  128 MiB
In:    serial
Out:   serial
Err:   serial
Net:   egiga0
Hit any key to stop autoboot:  0 
starting USB...
USB0:   USB EHCI 1.00
scanning bus 0 for devices... EHCI timed out on TD - token=0x80008c80
unable to get device descriptor (error=-1)
1 USB Device(s) found
       scanning usb for storage devices... 0 Storage Device(s) found
Unknown command 'ide' - try 'help'
Unknown command 'mmc' - try 'help'

no USB devices available
Unknown command 'ide' - try 'help'
Unknown command 'mmc' - try 'help'
running scan_disk ...
Scan device usb
device usb 0:1
** Bad device usb 0 **
device usb 1:1
** Bad device usb 1 **
device usb 2:1
** Bad device usb 2 **
device usb 3:1
** Bad device usb 3 **
Scan device ide
Unknown command 'ide' - try 'help'
device ide 0:1
** Bad device ide 0 **
device ide 1:1
** Bad device ide 1 **
device ide 2:1
** Bad device ide 2 **
device ide 3:1
** Bad device ide 3 **
Scan device mmc
Unknown command 'mmc' - try 'help'
device mmc 0:1
** Bad device mmc 0 **
device mmc 1:1
** Bad device mmc 1 **
device mmc 2:1
** Bad device mmc 2 **
device mmc 3:1
** Bad device mmc 3 **
loading uImage ...
** Bad device usb 0 **
loading uInitrd ...
** Bad device usb 0 **
loading DTB /boot/dts/kirkwood-pogo_e02.dtb ...
** Bad device usb 0 **
Wrong Image Format for bootm command
ERROR: can't get kernel image!
PogoE02>

printenv outputs the following:

 printenv
arcNumber=3542
bootargs=console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 mtdparts=orion_nand:1M(u-boot),4M(uImage),32M(rootfs),-(data)
bootcmd=run bootcmd_uenv; run scan_disk; run set_bootargs; run bootcmd_exec
bootcmd_exec=run load_uimage; if run load_initrd; then if run load_dtb; then bootm $load_uimage_addr $load_initrd_addr $load_dtb_addr; else bi
bootcmd_uenv=run uenv_load; if test $uenv_loaded -eq 1; then run uenv_import; fi
bootdelay=10
bootdev=usb
device=0:1
devices=usb ide mmc
disks=0 1 2 3
dtb_file=/boot/dts/kirkwood-pogo_e02.dtb
ethact=egiga0
ethaddr=52:3b:20:9c:11:51
if_netconsole=ping $serverip
init_ide=ide reset
init_mmc=mmc rescan
init_usb=usb start
ipaddr=192.168.0.231
led_error=orange blinking
led_exit=green off
led_init=green blinking
load_dtb=echo loading DTB $dtb_file ...; load $bootdev $device $load_dtb_addr $dtb_file
load_dtb_addr=0x1c00000
load_initrd=echo loading uInitrd ...; load $bootdev $device $load_initrd_addr /boot/uInitrd
load_initrd_addr=0x1100000
load_uimage=echo loading uImage ...; load $bootdev $device $load_uimage_addr /boot/uImage
load_uimage_addr=0x800000
machid=dd6
mainlineLinux=yes
mtdids=nand0=orion_nand
mtdparts=mtdparts=orion_nand:1M(u-boot),4M(uImage),32M(rootfs),-(data)
partition=nand0,2
preboot_nc=run if_netconsole start_netconsole
scan_disk=echo running scan_disk ...; scan_done=0; setenv scan_usb "usb start";  setenv scan_ide "ide reset";  setenv scan_mmc "mmc rescan"; e
scan_ide=ide reset
scan_mmc=mmc rescan
scan_usb=usb start
serverip=192.168.0.220
set_bootargs=setenv bootargs console=ttyS0,115200 root=LABEL=rootfs rootdelay=10 $mtdparts $custom_params
start_netconsole=setenv ncip $serverip; setenv bootdelay 10; setenv stdin nc; setenv stdout nc; setenv stderr nc; version;
stderr=serial
stdin=serial
stdout=serial
uenv_addr=0x810000
uenv_import=echo importing envs ...; env import -t $uenv_addr $filesize
uenv_init_devices=setenv init_usb "usb start";  setenv init_ide "ide reset";  setenv init_mmc "mmc rescan"; for devtype in $devices; do run i;
uenv_load=run uenv_init_devices; setenv uenv_loaded 0; for devtype in $devices;  do for disknum in 0; do run uenv_read_disk; done; done;
uenv_loaded=0
uenv_read=echo loading envs from $devtype $disknum ...; if load $devtype $disknum:1 $uenv_addr /boot/uEnv.txt; then setenv uenv_loaded 1; fi
uenv_read_disk=if test $devtype -eq mmc; then if $devtype part; then run uenv_read;  fi; else if $devtype part $disknum; then run uenv_read; i
usb_ready_retry=15

Environment size: 3127/131068 bytes

All help is greatly appreciated!

Thanks.